¿Cuál es el resultado de restar la segunda ecuación de la primera?
\ begin {alineado} 2x + 7y & = -8 2x-5y & = -1 \ end {alineado}
2 x+7 y
2 x-5 y


=- 8
=- 1

If 1 km = 0.621 miles, how many miles are in a centimeter

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18